<!DOCTYPE html>
<html lang="en">

<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8" />
    <title>QSKJ_LOCAL</title>
    <script type="text/javascript" src="/Public/Build/Cesium/Cesium.js"></script>
    <script type="text/javascript" src="/Public/js/ellipsoidTrailMaterialProperty.js"></script>
    <script src="/Public/js/jquery-3.7.1.min.js"></script>
    <link rel="stylesheet" href="/Public/Build/Cesium/Widgets/widgets.css">
</head>

<body>
    <div id="cesiumContainer"></div>
    <script type="module">
        Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiI0MjczNDgzMy1hYzE1LTRjNWYtODZhMS01MjZkNWRiMDc2MmUiLCJpZCI6ODIxMzAsImlhdCI6MTY0NDU0ODc0M30.LpGXXWsbQXucV5MTeC2g8BCAQWiZp612gosWcK-7ocE';

        const viewer = new Cesium.Viewer('cesiumContainer', {
            // terrain: Cesium.Terrain.fromWorldTerrain(),
        });


       let source = `czm_material czm_getMaterial(czm_materialInput materialInput)
      {
         czm_material material = czm_getDefaultMaterial(materialInput);
         vec2 st = materialInput.st;
         vec4 colorImage = texture(image, vec2(fract((st.s - speed * czm_frameNumber * 0.001)), st.t));
         material.alpha = colorImage.a;
         material.diffuse = colorImage.rgb * 1.5 ;
         return material;
      }`;

        const material = new Cesium.Material({
            fabric: {
                uniforms: {
                    color: Cesium.Color.fromCssColorString("#7ffeff"),
                    image: "/Public/imgs/flowArrow2.png",
                    speed: 2,
                },
                source,
            },
            translucent: function () {
                return true;
            },
        });
        // 材质着色的外观
        const appearance = new Cesium.PolylineMaterialAppearance();
        appearance.material = material;
        const primitive = new Cesium.Primitive({
            geometryInstances: new Cesium.GeometryInstance({
                geometry: new Cesium.PolylineGeometry({
                    positions: Cesium.Cartesian3.fromDegreesArrayHeights([
                        114.02, 25.02, 1000,
                        114.05, 25.02, 1000
                    ]),
                    width: 5.0,
                })
            }),
            appearance,
            asynchronous: false,
        });

        viewer.scene.primitives.add(primitive);

        viewer.camera.flyTo({
            destination: Cesium.Cartesian3.fromDegrees(114.02, 25.01, 10000),
            duration: 0
        })

    </script>
    </div>
</body>

</html>